I think what you and your wife are doing is absolutely wonderful. There are not enough positive adjectives to describe this.
You may realize this but you’ve removed a tremendous burden from your childs shoulders. They will forever and endlessly love you for this.
I know directly of a family whose daughter (former son), situation ended in the worse way imaginable.
By being such wonderful human beings you will have such a great family life.
Bravo to you both, and your child!
Love and Hugs,